Subject: [Tweeters] Is there any data yet on birds and global warming in
Date: Jul 20 12:13:14 2007
From: monte merrick - montemerrick at speakeasy.net


as far as NA goes, i dont know, but in europe birds are overwintering
in the UK who had historically migrated away.

i think one of the big concern regarding the effects of global warming
on birds is seabird mortality.


here is one link - many more available with a brief look at google.
http://www.weathernotebook.org/transcripts/1999/10/15.html

and here is a paper presented this winter dealing specifically with
west coast north american seabirds.
http://www.eurekalert.org/pub_releases/2007-02/s-ndw021307.php


Global Loss of Biodiversity Harming Ocean Bounty, Science

Excerpts: Environmental groups often argue that biodiversity offers
tangible
benefits to people. (...) loss of ocean populations and species has
been
accompanied by plummeting catches of wild fish, declines in water
quality, and
other costly losses. They even project that all commercial fish and
seafood
species will collapse by 2048. "It's a gloomy picture," says lead
author Boris
Worm of Dalhousie University in Halifax, Canada. Yet the team provides a
glimmer of hope, concluding that people still have time to recoup these
ecosystem benefits if they restore biodiversity.
Source: Global Loss of Biodiversity Harming Ocean Bounty[
http://www.sciencemag.org/cgi/content/full/314/5800/745 ], Erik
Stokstad, DOI:
10.1126/science.314.5800.745, Science, Vol. 314. no. 5800, p. 745,
06/11/03

You can discuss this article on Articles Forum
http://www.comdig.com/topic.php?id_article=26001


here's a nationalgeographic article on this story
http://news.nationalgeographic.com/news/2006/11/061102-seafood-
threat.html

and here's how the seattle times handled it

http://archives.seattletimes.nwsource.com/cgi-bin/texis.cgi/web/vortex/
display?slug=seafood03m&date=20061103&query=dalhousie+worm+2048


and here is a link to a story on red legged kittiwakes and the loss of
suitable diet.

http://www.newscientist.com/article.ns?id=dn8287

anyway - these certainly indicate something and point us all in a
direction to investigate.

good luck


monte



If I have unjustly wrested a plank from a drowning man, I must restore
it to
him though I drown myself. - henry thoreau

On 20 Jul 2007, , at 11:04, Wayne Weber wrote:

> Ed and Tweeters,
>
> There is definitely some evidence that migrating birds are arriving
> earlier
> in the spring. I published a paper which showed that most species of
> birds
> are arriving 2-3 days earlier in the Vancouver area than they did 30
> years
> ago. Other papers have shown the same thing in other areas.
>
> However, there is no proof that this is due to global warming,
> especially
> since bird migration is supposed to be controlled mostly by
> photoperiod, not
> by temperatures or other climatic factors. A more convincing
> relationship to
> global warming would be if someone showed that the breeding ranges of
> many
> species are shifting farther northward. I think this could be proven,
> but
> I?m not sure that anyone has yet shown it in a published paper.
>
> Wayne C. Weber
> Delta, BC
> contopus at telus.net
>
>
>
>
> From: tweeters-bounces at mailman1.u.washington.edu
> [mailto:tweeters-bounces at mailman1.u.washington.edu] On Behalf Of Ed
> Swan
> Sent: July-19-07 6:31 PM
> To: tweeters
> Subject: [Tweeters] Is there any data yet on birds and global warming
> in
> North America?
>
> I was wondering if anyone knew of any studies documenting the effects
> of
> global warming on birds in North America, if any, and also anything for
> Washington State.? Aren't some species arriving earlier than they used
> to in
> the spring?? And is this global warming or something else?
> ?
> Ed Swan
> Vashon Island
>
>
>
> _______________________________________________
> Tweeters mailing list
> Tweeters at u.washington.edu
> http://mailman1.u.washington.edu/mailman/listinfo/tweeters
>